by Only a fraction of the presumed cases in five countries have led to positive tests for anthrax. Some scientists say other causes cannot yet be ruled out.Only a fraction of the presumed cases in five countries have led to positive tests for anthrax. Some scientists say other causes cannot yet be ruled out.Read MoreAnthrax, Tests (Medical), Alternative and Complementary Medicine, Cattle, Africa Centers for Disease Control and Prevention, Africa, UgandaNYT > Health
